diff --git a/.github/workflows/django.yml b/.github/workflows/django.yml
index 57d698d..a73e6cb 100644
--- a/.github/workflows/django.yml
+++ b/.github/workflows/django.yml
@@ -40,4 +40,5 @@ jobs:
         cd i18nilize
         python3 -m tests.test_read_file
         python3 -m tests.test_parse_json
-        python3 -m tests.test_api_helpers
\ No newline at end of file
+        python3 -m tests.test_cli
+        python3 -m tests.test_api_helpers
diff --git a/.gitignore b/.gitignore
index 65833dd..658bd83 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 env/
 **/__pycache__
 myenv
-venv
\ No newline at end of file
+venv
+i18nilize.egg-info
diff --git a/i18nilize/__init__.py b/i18nilize/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/i18nilize/src/__init__.py b/i18nilize/src/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/i18nilize/src/internationalize/__pycache__/helpers.cpython-310.pyc b/i18nilize/src/internationalize/__pycache__/helpers.cpython-310.pyc
deleted file mode 100644
index 4e4d4dc..0000000
Binary files a/i18nilize/src/internationalize/__pycache__/helpers.cpython-310.pyc and /dev/null differ
diff --git a/i18nilize/src/internationalize/command_line.py b/i18nilize/src/internationalize/command_line.py
new file mode 100644
index 0000000..e2c4124
--- /dev/null
+++ b/i18nilize/src/internationalize/command_line.py
@@ -0,0 +1,47 @@
+#from src.internationalize.helpers import add_language
+import json
+import argparse
+from i18nilize.src.internationalize.helpers import add_language, add_update_translated_word, delete_translation
+
+def cli():
+    # initialize the parser
+    parser = argparse.ArgumentParser(description="internationalization for translation")
+    subparsers = parser.add_subparsers(dest='command')
+
+    # sub parser for add_language
+    add_lang_parser = subparsers.add_parser('add-language')
+    add_lang_parser.add_argument('language')
+
+    # sub parser for add
+    add_parser = subparsers.add_parser('add')
+    add_parser.add_argument('language')
+    add_parser.add_argument('original_word')
+    add_parser.add_argument('translated_word')
+
+    # sub parser for update
+    update_parser = subparsers.add_parser('update')
+    update_parser.add_argument('language')
+    update_parser.add_argument('original_word')
+    update_parser.add_argument('translated_word')
+
+    # sub parser for delete
+    delete_parser = subparsers.add_parser('delete')
+    delete_parser.add_argument('language')
+    delete_parser.add_argument('original_word')
+    delete_parser.add_argument('translated_word')
+
+    # the subparser is used because different CLIs use a different amount of inputs
+
+    args = parser.parse_args()
+
+    # depending on the command, do different things
+    if args.command == 'add-language':
+        add_language(args.language)
+    elif args.command == 'add' or args.command == 'update':  
+        add_update_translated_word(args.language, args.original_word, args.translated_word)
+    elif args.command == 'delete':
+        delete_translation(args.language, args.original_word, args.translated_word)
+    else:
+        print("Invalid command")
+
+cli()
\ No newline at end of file
diff --git a/i18nilize/src/internationalize/globals.py b/i18nilize/src/internationalize/globals.py
index ecb566b..a1b68e8 100644
--- a/i18nilize/src/internationalize/globals.py
+++ b/i18nilize/src/internationalize/globals.py
@@ -9,4 +9,6 @@ def __init__(self):
 TOKEN_ENDPOINT = f"{API_BASE_URL}token/"
 TRANSLATIONS_ENDPOINT = f"{API_BASE_URL}translations/"
 
-token = GlobalToken()
\ No newline at end of file
+LANGUAGES_DIR = 'src/internationalize/languages'
+
+token = GlobalToken()
diff --git a/i18nilize/src/internationalize/helpers.py b/i18nilize/src/internationalize/helpers.py
index 2e5ec84..3983723 100644
--- a/i18nilize/src/internationalize/helpers.py
+++ b/i18nilize/src/internationalize/helpers.py
@@ -1,9 +1,7 @@
 import json
+import sys
 import os
 import requests
-from geocoder import ip
-from geopy.geocoders import Nominatim
-from babel.languages import get_official_languages
 from . import globals
 
 # Function to parse json file, given its path
@@ -23,6 +21,57 @@ def get_json(file_path):
         raise e
     return data
 
+# Adds a json file corresponding to the added language
+def add_language(language):
+    os.makedirs(globals.LANGUAGES_DIR, exist_ok=True)
+    file_path = os.path.join(globals.LANGUAGES_DIR, f"{language.lower()}.json")
+
+    if os.path.exists(file_path):
+        return
+    
+    initial_content = {}
+    with open(file_path, 'w') as file:
+        json.dump(initial_content, file, indent=4)
+    print(f"Language added.")
+
+# Adds/updates a translated word under the given language in the default JSON file
+def add_update_translated_word(language, original_word, translated_word):
+    file_path = os.path.join(globals.LANGUAGES_DIR, f"{language.lower()}.json")
+
+    if not os.path.exists(file_path):
+        print(f"Error: Language '{language}' does not exist. Add the language before adding a translation.")
+        sys.exit(1)
+    
+    data = get_json(file_path)
+
+    data[original_word] = translated_word
+    with open(file_path, 'w') as file:
+        json.dump(data, file, indent=4)
+    print(f"{original_word}: {translated_word} added to translations.")
+
+# Deletes a translated word for the given language
+def delete_translation(language, original_word, translated_word):
+    file_path = os.path.join(globals.LANGUAGES_DIR, f"{language.lower()}.json")
+
+    if not os.path.exists(file_path):
+        print(f"Error: Language '{language}' does not exist.")
+        sys.exit(1)
+
+    data = get_json(file_path)
+
+    if original_word not in data:
+        print(f"Error: Original word '{original_word}' does not exist in language '{language}'.")
+        sys.exit(1)
+
+    if data[original_word] != translated_word:
+        print(f"Error: Translated word for '{original_word}' does not match '{translated_word}'.")
+        sys.exit(1)
+
+    del data[original_word]
+    with open(file_path, 'w') as file:
+        json.dump(data, file, indent=4)
+    print(f"Translation for '{original_word}' deleted successfully from language '{language}'.")
+
 # Input: 
 #   - file_path: path of json file
 # Output: Token in json file
@@ -71,7 +120,7 @@ def generate_file(language, token):
         return
     
     file_content = response.json() 
-    
+
     # transforms the dictionary object above into a JSON object
     json_object = json.dumps(file_content, indent=4)
     create_json(json_object, language)
diff --git a/i18nilize/src/internationalize/languages/korean.json b/i18nilize/src/internationalize/languages/korean.json
new file mode 100644
index 0000000..9e26dfe
--- /dev/null
+++ b/i18nilize/src/internationalize/languages/korean.json
@@ -0,0 +1 @@
+{}
\ No newline at end of file
diff --git a/i18nilize/tests/__pycache__/test_parse_json.cpython-310.pyc b/i18nilize/tests/__pycache__/test_parse_json.cpython-310.pyc
deleted file mode 100644
index d135271..0000000
Binary files a/i18nilize/tests/__pycache__/test_parse_json.cpython-310.pyc and /dev/null differ
diff --git a/i18nilize/tests/test_cli.py b/i18nilize/tests/test_cli.py
new file mode 100644
index 0000000..f742f86
--- /dev/null
+++ b/i18nilize/tests/test_cli.py
@@ -0,0 +1,161 @@
+import unittest, os, json, timeit
+from unittest.mock import patch
+from src.internationalize.helpers import delete_translation, get_json, make_translation_map, get_translation, add_language, add_update_translated_word
+
+# Create your tests here.            
+# To test:
+# In i18nilize directory, run python -m tests.test_cli
+
+class TestCLI(unittest.TestCase):                
+    def setUp(self):
+        self.languages_dir = "src/internationalize/languages"
+        os.makedirs(self.languages_dir, exist_ok=True)
+
+    def test_add_new_language(self):
+        new_language = "Japanese"
+        add_language(new_language)
+        new_language_path = os.path.join(self.languages_dir, f"{new_language.lower()}.json")
+        self.assertTrue(os.path.exists(new_language_path))
+
+        with open(new_language_path, "r") as file:
+            data = json.load(file)
+        self.assertEqual(data, {})
+
+        # clean up test
+        os.remove(new_language_path)
+
+    def test_add_word_language_exists(self):
+        existing_language = "French"
+        file_path = os.path.join(self.languages_dir, f"{existing_language.lower()}.json")
+
+        # save original state
+        with open(file_path, "r") as file:
+            original_translations = json.load(file)
+
+        data = get_json(file_path)
+        self.assertEqual(len(data), 2)
+
+        add_update_translated_word("French", "good", "bien")
+        data = get_json(file_path)
+        self.assertEqual(len(data), 3)
+        self.assertEqual(data["good"], "bien")
+
+        # clean up test
+        with open(file_path, 'w') as file:
+            json.dump(original_translations, file, indent=4)
+
+    def test_update_word_language_exists(self):
+        existing_language = "French"
+        file_path = os.path.join(self.languages_dir, f"{existing_language.lower()}.json")
+
+        # save original state
+        with open(file_path, "r") as file:
+            original_translations = json.load(file)
+
+        data = get_json(file_path)
+        self.assertEqual(len(data), 2)
+
+        add_update_translated_word("French", "thanks", "merc")
+        data = get_json(file_path)
+        self.assertEqual(len(data), 2)
+        self.assertEqual(data["thanks"], "merc")
+
+        # clean up test
+        with open(file_path, 'w') as file:
+            json.dump(original_translations, file, indent=4)
+
+    @patch('builtins.print')
+    def test_add_word_language_does_not_exist(self, mock_print):
+        with self.assertRaises(SystemExit) as context:
+            add_update_translated_word("NonExistentLanguage", "a", "b")
+        self.assertTrue(context.exception.code, 1)
+
+        mock_print.assert_called_once_with("Error: Language 'NonExistentLanguage' does not exist. Add the language before adding a translation.")
+
+    def test_delete_translation_success(self):
+        language = "German"
+        add_language(language)
+        file_path = os.path.join(self.languages_dir, f"{language.lower()}.json")
+        
+        initial_translations = {
+            "goodbye": "auf Wiedersehen",
+            "thank you": "danke"
+        }
+        with open(file_path, "w") as file:
+            json.dump(initial_translations, file, indent=4)
+        
+        data = get_json(file_path)
+        self.assertIn("goodbye", data)
+        self.assertEqual(data["goodbye"], "auf Wiedersehen")
+
+        delete_translation(language, "goodbye", "auf Wiedersehen")
+
+        # verify deletion
+        data = get_json(file_path)
+        self.assertNotIn("goodbye", data)
+        self.assertIn("thank you", data)
+
+    @patch('builtins.print')
+    def test_delete_translation_language_does_not_exist(self, mock_print):
+        language = "Russian"
+        original_word = "hello"
+        translated_word = "привет"
+
+        with self.assertRaises(SystemExit) as context:
+            delete_translation(language, original_word, translated_word)
+        self.assertEqual(context.exception.code, 1)
+
+        mock_print.assert_called_once_with(f"Error: Language '{language}' does not exist.")
+
+    def test_delete_translation_word_does_not_exist(self):
+        language = "Chinese"
+        add_language(language)
+        file_path = os.path.join(self.languages_dir, f"{language.lower()}.json")
+        
+        initial_translations = {
+            "thank you": "谢谢"
+        }
+        with open(file_path, "w") as file:
+            json.dump(initial_translations, file, indent=4)
+        
+        data = get_json(file_path)
+        self.assertIn("thank you", data)
+        self.assertNotIn("good morning", data)
+
+        with patch('builtins.print') as mock_print, self.assertRaises(SystemExit) as context:
+            delete_translation(language, "good morning", "早上好")
+        self.assertEqual(context.exception.code, 1)
+        mock_print.assert_called_once_with(f"Error: Original word 'good morning' does not exist in language '{language}'.")
+
+        # ensure existing translations remain unchanged
+        data = get_json(file_path)
+        self.assertIn("thank you", data)
+        self.assertEqual(data["thank you"], "谢谢")
+
+    def test_delete_translation_word_mismatch(self):
+        language = "Korean"
+        add_language(language)
+        file_path = os.path.join(self.languages_dir, f"{language.lower()}.json")
+        
+        initial_translations = {
+            "welcome": "환영합니다"
+        }
+        with open(file_path, "w") as file:
+            json.dump(initial_translations, file, indent=4)
+        
+        data = get_json(file_path)
+        self.assertIn("welcome", data)
+        self.assertEqual(data["welcome"], "환영합니다")
+
+        with patch('builtins.print') as mock_print, self.assertRaises(SystemExit) as context:
+            delete_translation(language, "welcome", "환영해요")
+        self.assertEqual(context.exception.code, 1)
+        mock_print.assert_called_once_with(f"Error: Translated word for 'welcome' does not match '환영해요'.")
+
+        # ensure existing translations remain unchanged
+        data = get_json(file_path)
+        self.assertIn("welcome", data)
+        self.assertEqual(data["welcome"], "환영합니다")
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..4182ca5
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,22 @@
+import setuptools 
+from setuptools import find_packages
+
+# setup file for the command line
+# before testing, do the following command:
+#  pip install -e
+# within the virtual environment, this will enable you to use i18nilize CLI
+setuptools.setup(
+    # package name
+    name='i18nilize',
+
+    # arbitrary version #
+    version='1.0',
+
+    # downloads the necessary packages (ex. json)
+    packages=find_packages(),
+
+    # directs the script towards the function located in that file
+    entry_points = {
+        'console_scripts': ['i18nilize=i18nilize.src.internationalize.command_line:cli'],
+    },
+)
\ No newline at end of file